Welcome to the 1520 Perfect Dictionary
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| Periodic law | |
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| PERIODIC LAW Definition: A statement in chemistry: the chemical and physical properties of elements depend upon the structure of the atom and vary with the atomic number in a systematic and roughly periodic way. ____________________________________ See perfect law (10). See perfect type (1). ____ See perfect form (1). See perfect statement (5). ____ See perfect specificity. ____ See perfect particularity (1). | |
1520 Products |
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1520 Products was established in 2005 with the purpose of entertaining and teaching us on key and important aspects of life (such as marriage, sex, etc) through the playing of games which will allow us to laugh but at the same time pass a message of what is the right or ideal way. |
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 1520 Sex Game |
 1520 Puzzles |
 1520 Marriage Game |